Hannes Kühne, HLD Dresden. Two-dimensional (2D) spin systems with an XY anisotropy are known to undergo a Berezinskii-Kosterlitz-Thouless (BKT) phase transition at a finite temperature TBKT, which marks the binding of topological defects in vortex-antivortex pairs. So far, experimental efforts to probe a genuine BKT transition in bulk materials were [...]
Ramakanta Chapai, J. F. Mitchell and Ulrich Welp, Argonne National Laboratory, Vincent Oliviero, Maxime Leroux, LNCMI Toulouse. The recently discovered-kagome lattice compounds AV3Sb5 (A = K, Rb, Cs) show a fascinating interplay of superconductivity, charge density wave (CDW) order, and nontrivial topology of the electronic band structure. The CDW order [...]
Matija Čulo, Institute of Physics, Zagreb, Croatia and Nigel Hussey, HFML and University of Bristol, UK. High-temperature superconductivity is one of the biggest unsolved problems in condensed-matter physics, due to its unconventional superconducting (SC) pairing mechanism, which goes beyond the standard electron-phonon interaction. Many materials with such an unconventional SC [...]
Jan Wyzula and Milan Orlita, University of Fribourg and LNCMI Grenoble. Magnons, or quantized spin waves, are collective magnetic excitations in solids. These boson-like quasiparticles disperse with lattice momentum k, carry a fixed energy, and possess an integer spin or angular momentum Sz = ±1. Although magnons are optically active, [...]
Photo (©) Gideon Laureijs (HFML), Radboud Universiteit, Nijmegen. Published on May 30, 2023. Since the beginning of 2023, I have been appointed as acting director of HFML and I am now leading the HFML-FELIX laboratory in Nijmegen. Though it came unexpected at this point in time, it feels as a [...]
The 25th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-25) and 21st International Conference on Modulated Semiconductor Structures (MSS-21) will be held in Grenoble, France, from 10 to 14th July 2023 https://ep2ds25mss21.sciencesconf.org/ Electronic, optical, and magnetic properties of nano- and heterostructures Quantum Hall effects and related phenomena Spintronics and [...]
The international workshop “Magnetic Resonance of Correlated Electron Materials" will take place on 17-23 September 2023, in Dresden, Germany. The workshop is inspired by two very successful conferences held in Trogir, Croatia, in 2010 and 2011, and a similar workshop organized by Jürgen Haase in Dresden in 2005. These workshops [...]
The Joint European Magnetic Symposia (JEMS) is the most important and comprehensive conference on Magnetism in Europe. JEMS2023 will take place from 27th August to 1st September 2023 at the Faculty of Medicine in the main campus of Universidad Complutense de Madrid, with a unique Welcome Reception taking place in a [...]
Sergei Zvyagin, HLD Dresden. Antiferromagnetic materials with spin 1/2 and triangular-lattice structures are in the focus of modern quantum physics, in particular, in connection with Anderson’s idea of “resonating valence bond” states in frustrated spin systems. He proposed that the ground state could be a two dimensional (2D) fluid of [...]
Amirreza Ataei and Louis Taillefer, Université de Sherbrooke, Canada, Cyril Proust and David Vignolles, LNCMI-Toulouse. In certain materials called “strange metals”, the electrical resistivity follows a perfectly linear temperature dependence at low temperature, in contrast to the standard quadratic dependence expected from standard Fermi-liquid theory. Remarkably, it has recently been [...]